Spearfish, SD

View All Locations

Spearfish, SD Office Contact Information:

 

 

spearfish

Interstate Engineering

P.O. Box 226
123 East Jackson Blvd, Suite 1
Spearfish, SD 57783-0226
Phone (605) 642-4772

Ron Bengs, PE
Interim Office Manager

 

Daren Peterka, PE, PLS
Interim Office Manager

 

Email Spearfish